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Property Acquisitions - Additional Information (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Jun. 08, 2017 USD ($) a Wells | Dec. 31, 2016 USD ($) a Wells | Mar. 31, 2017 USD ($) | Sep. 30, 2017 USD ($)
Business Acquisition [Line Items] |  |  |  |
Acquisition of oil and natural gas properties |  |  |  | $ (419,471)
Unproved properties acquired |  | $ 1,905,661 |  | 2,008,902
Proved properties |  | 605,853 |  | 1,306,873
Payable to Silverback |  | $ 32,293 |  | 0
Undeveloped Acreage and Oil and Gas Producing Properties From Silverback Exploration, LLC |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of horizontal wells acquired (in wells) | Wells |  | 31 |  |
Gas and oil area, area offset by existing acreage (in acres) | a |  | 35,500 |  |
Gas and oil area, gross offset existing acreage (in acres) | a |  | 43,500 |  |
Gas and oil area, operated by company, percent |  | 90.00% |  |
Gas and oil area, working interest, percent |  | 90.00% |  |
Consideration transferred |  | $ 855,000 | $ 867,772 |
Payable to Silverback |  | $ 32,300 |  |
Adjustments to provisional amount |  |  |  | $ 300
Northern Delaware Basin |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of horizontal wells acquired (in wells) | Wells | 36 |  |  |
Gas and oil area, area offset by existing acreage (in acres) | a | 11,850 |  |  |
Gas and oil area, gross offset existing acreage (in acres) | a | 14,770 |  |  |
Acquisition of oil and natural gas properties | $ (349,100) |  |  |
Gas and oil area, operated by company, percent | 79.00% |  |  |
Gas and oil area, working interest, percent | 85.00% |  |  |
Proved properties | $ 53,200 |  |  |
Capitalized transaction costs | 500 |  |  |
Northern Delaware Basin | Scenario, Previously Reported |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition of oil and natural gas properties | (350,000) |  |  |
Northern Delaware Basin | Restatement Adjustment |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition of oil and natural gas properties | 900 |  |  |
Unproved properties acquired | $ 296,200 |  |  |

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